Page 20 - DS225 Modern-buildings

Protection of lighting systems Find out more at: Upholding the infrastructure Find out more at:
www.de.hn/led-en
www.de.hn/tbse
Surge protection for LED lights Surge protection for technical building services

Surge arresters protect sensitive LED technology from damage, thus preventing cost- Surge arresters ensure that the basic supply structures of technical
intensive failure, time-consuming repair and expensive replacement of the LED light. building services are stable and reliable.

Damage caused by surges Protective devices prevent failure Closing security gaps

Although LED lights have many advantages, their short- Powerful surge arresters protect sensitive LED technology, Technical building services include heating, ventilation, sanitary engineering, air-conditioning and electrical engineering,
comings over traditional luminaires are that they are more preventing damage and ensuring the long service life of as well as measuring, control and regulation technology. All these services access the power and data systems of the building.
susceptible to surge damage and that the cost of replacement LED lights. This reduces replacement costs and avoids time- However, this also means that operators rely on the protection measures for the electric devices in these systems. But what
is higher. Such unnecessary costs are easily avoided! consuming and costly maintenance work. Another advan- happens if there are gaps? Central components of the technical building services are then vulnerable to, e.g., dangerous
tage: reliable LED lighting ensures uninterrupted work and surges. As a result, the heating or ventilation system might no longer work after a thunderstorm and important measuring
It is not only direct lightning strikes that cause damage. production processes and, therefore, satisfied users. and / or control technology could be destroyed.
Indirect lightning effects often cause surges which exceed
the immunity of sensitive LED lights many times over. This Prevent damage and implement a comprehensive Observing framework conditions
results in partial or complete failure of the LED modules and surge protection concept:
destruction of the LED drivers. Another risk factor for LED ‚ Directly at the LED light / light strip. IEC 60364-5-53 clause 534 calls for separate surge arresters directly at the consumer (e.g. air-conditioning containers or
lights is network-generated surges caused by, for example, heating sensor) if the cable length from the upstream electrical connection exceeds 10 m. This is an important aspect which is
switching operations which lead to premature ageing of the ‚ In the upstream sub-distribution board. often neglected in technical building services equipment.
LED light.
Technical building services equipment in modern buildings is interconnected and interdependent. Many components interact,
for example, in the power system, to optimise consumption and save resources. Shading and heating systems or air-conditioning
and ventilation processes are controlled by specified temperatures or solar radiation. If a single component fails, the function of
the entire system is affected.

Surge protection Surge protection
Distribution box At the light strip Sub-distribution board Protection of the DALI control Sub-distribution board Information technology Bus systems KNX / EIB Industrial Ethernet / PoE++
Power supply Power supply Power supply
Power supply for RS 485 Power supply Data technology

DEHNshield TNS FM DEHNcord L 2P SN1860 DEHNguard M TNS 275 FM BUStector
DEHNguard M TT ACI 275 FM BLITZDUCTOR HF 5 BUStector M 1 220 FM DEHNpatch Class E
Part No. 941 405 Part No. 999 937 Part No. 952 405 Part No. 925 001
Part No. 952 341 Part No. 920 300 / 920 371 Part No. 925 001 Part No. 929 121

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